CN104879515A - Flow control valve and respirator provided with same - Google Patents
Flow control valve and respirator provided with same Download PDFInfo
- Publication number
- CN104879515A CN104879515A CN201410072351.3A CN201410072351A CN104879515A CN 104879515 A CN104879515 A CN 104879515A CN 201410072351 A CN201410072351 A CN 201410072351A CN 104879515 A CN104879515 A CN 104879515A
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- Prior art keywords
- flow control
- catch
- control valve
- regulating spool
- vent
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
- F16K3/06—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
- F16K3/08—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a flow control valve and a respirator provided with the same. The flow control valve comprises a valve body, an adjusting valve core, an adjusting separation blade and a valve rod. A chamber provided an opened side is defined in the valve body, and the valve body is provided with an air inlet and an air outlet which are connected to the chamber. The adjusting valve core is disposed inside the valve body and is arranged between the air inlet and the air outlet. The adjusting valve core is provided with air vents connected to the air inlet and the air outlet. The adjusting separation blade is movably attached to the adjusting valve core so as to adjust connection sectional areas of the air vents and the air inlet and the air outlet. The valve rod is arranged on the opened side of the chamber and encloses the chamber. The valve rod is connected to the adjusting separation blade so as to drive the adjusting separation blade to move. According to the invention, the adjusting separation blade is movably attached to the adjusting valve core, the valve rod is connected to the adjusting separation blade, and the connection sectional areas of the air vents and the air inlet and the air outlet can be changed through the adjusting separation blade, so that the gas flow can be adjusted, an adjusting process is simple and convenient, and the adjusting accuracy is high.
Description
Technical field
The present invention relates to medical equipment technical field, more specifically, relate to a kind of flow control valve and there is its respiratory machine.
Background technique
In respiratory machine field, flow control valve is mostly regulated gas flow by taper fit, and promotes the relative height of cone and tapered sleeve by screw thread rotation, thus controls ventilation sectional area, completes the ascending adjustment of flow.Because of taper WEDM error more greatly and not easily measure, often there will be Flow-rate adjustment inaccurate, range of flow can not meet the requirements of phenomenon.Cone is in use easy to wear simultaneously, greatly reduces the working life of flow control valve.The flow control valve of this structure becomes the drawback of respiratory machine production and use.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is to propose the convenient and flow control valve accurately of a kind of Flow-rate adjustment.
Another object of the present invention is to propose a kind of respiratory machine with above-mentioned flow control valve.
According to the flow control valve of the embodiment of the present invention, comprising: valve body, be limited with the chamber that side is opened wide in described valve body, described valve body is provided with and the suction port of described chamber conducting and air outlet; Regulating spool, described regulating spool is located in described chamber and between described suction port and air outlet, described regulating spool is provided with the vent with described suction port and air outlet conducting; Regulate catch, described adjustment catch fits the setting of described regulating spool movably with the sectional area regulating described vent and described suction port and air outlet conducting; And valve rod, described valve rod is located at the unlimited side of described chamber and closes described chamber, and described valve rod is connected with described adjustment catch to drive described adjustment catch movable.
According to the flow control valve of the embodiment of the present invention, by adjustment catch is fitted movably regulating spool and make valve rod with adjustment catch be connected, when movable under the drive regulating catch at valve rod, the sectional area of the vent on regulating spool and suction port and air outlet conducting can change, changed thus by the uninterrupted of the gas of flow control valve, gas flow is regulated, and this adjustment process is simple and convenient and adjustment validity is high.
In addition, flow control valve according to the above embodiment of the present invention can also have following additional technical characteristics:
According to one embodiment of present invention, described chamber is formed as the tubbiness of open upper end, and described suction port is located at the side of contiguous lower end on described valve body, and described air outlet is located at the lower end of described valve body.
According to one embodiment of present invention, described regulating spool is formed as column, and described vent is formed as the through upper surface of described regulating spool and the through hole of lower surface.
According to one embodiment of present invention, described vent is formed as the linear vent extended along the axle center of described regulating spool to outer circumferential face, and the length of described vent is less than the radius of described regulating spool.
According to one embodiment of present invention, described adjustment catch fit described regulating spool upper surface arrange, described adjustment catch is formed as spirality, and the external frame of described adjustment catch comprises: helix portion, described helix portion by first end to the second end to external spiral 360 °; And line part, the two ends of described line part are connected with the second end with the first end in described helix portion respectively.
According to one embodiment of present invention, the upper surface of described regulating spool is provided with catch positioning spiro pit, described catch positioning spiro pit be located at described vent away from the one end in axle center and described regulating spool periphery along between.
According to one embodiment of present invention, the length of described line part is greater than the beeline between the first end in described helix portion and described catch positioning spiro pit.
According to one embodiment of present invention, the upper surface of described adjustment catch is provided with slot, and the lower end of described valve rod is stretched in described slot to drive described adjustment catch to rotate.
According to one embodiment of present invention, the outer circumferential face of described valve rod is provided with the circular groove extended along its circumference, and described flow control valve also comprises seal ring, and described seal ring to be set in described circular groove and to abut the inner circle wall of described valve body.
The respiratory machine of embodiment according to a second aspect of the present invention, comprises the flow control valve described in above-described embodiment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the flow control valve according to the embodiment of the present invention;
Fig. 2 is the structural representation of the valve body of flow control valve according to the embodiment of the present invention;
Fig. 3 is the plan view of the valve body of flow control valve according to the embodiment of the present invention;
Fig. 4 is the sectional view at regulating spool place in the valve body according to the flow control valve of the embodiment of the present invention;
Fig. 5 is the structural representation of the regulating spool of flow control valve according to the embodiment of the present invention;
Fig. 6 is the structural representation of the adjustment catch of flow control valve according to the embodiment of the present invention;
Fig. 7 is the sectional drawing of the adjustment catch of flow control valve according to the embodiment of the present invention;
Fig. 8 is the structural representation of the valve rod of flow control valve according to the embodiment of the present invention;
Fig. 9 is the end view of the valve rod of flow control valve according to the embodiment of the present invention;
Figure 10 be according to the flow control valve of the embodiment of the present invention in off position time regulate the position relationship schematic diagram of catch and vent;
Figure 11 is the position relationship schematic diagram regulating catch and vent according to the flow control valve of the embodiment of the present invention when opening state;
Figure 12 is the position relationship schematic diagram regulating catch and vent when complete opening state according to the flow control valve of the embodiment of the present invention.
Reference character:
Flow control valve 100;
Valve body 10; Chamber 11; Suction port 12; Air outlet 13; First limited part 14; Second limited part 15; Threaded mounting hole 16;
Regulating spool 20; Vent 21; Catch positioning spiro pit 22;
Regulate catch 30; Helix portion 31; Line part 32; Slot 33; ;
Valve rod 40; Circular groove 41;
Seal ring 50;
Screw plug 60;
Packing ring 70.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
The flow control valve 100 of embodiment is according to a first aspect of the present invention described in detail below in conjunction with accompanying drawing.
As shown in Figures 1 to 12, comprise valve body 10, regulating spool 20 according to the flow control valve 100 of the embodiment of the present invention, regulate catch 30 and valve rod 40.Be limited with the chamber 11 that side is opened wide in valve body 10, valve body 10 is provided with and the suction port 12 of chamber 11 conducting and air outlet 13.Regulating spool 20 is located in chamber 11 and between suction port 12 and air outlet 13, regulating spool 20 is provided with the vent 21 with suction port 12 and air outlet 13 conducting.Catch 30 regulating spool 20 of fit is movably regulated to arrange to regulate the sectional area of vent 21 and suction port 12 and air outlet 13 conducting; Valve rod 40 is located at side that chamber 11 opens wide and closes chamber 11, and valve rod 40 is connected with adjustment catch 30 and regulates catch 30 activity to drive.
According to the flow control valve 100 of the embodiment of the present invention, by adjustment catch 30 is fitted movably regulating spool 20 and make valve rod 40 with adjustment catch 30 be connected, when regulating catch 30 movable under the drive of valve rod 40, vent 21 on regulating spool 20 can change with the sectional area of suction port 12 and air outlet 13 conducting, changed thus by the uninterrupted of the gas of flow control valve 100, gas flow is regulated, and this adjustment process is simple and convenient and adjustment validity is high.
Particularly, according to one embodiment of present invention, chamber 11 is formed as the tubbiness of open upper end substantially, and suction port 12 is located at the side of contiguous lower end on valve body 10, and air outlet 13 is located at the lower end of valve body 10.Further, regulating spool 20 is formed as column, and vent 21 is formed as the through upper surface of regulating spool 20 and the through hole of lower surface.The chamber 11 of tubbiness is formed in valve body 10, suction port 12 is located on the sidewall of contiguous lower end on valve body 10, air outlet 13 is located on the lower end surface of valve body 10, column regulating spool 20 to be located in chamber 11 and between air outlet 13 and suction port 12, its upper surface through on regulating spool 20 can be communicated with suction port 12 with air outlet 13 with the vent 21 of lower surface.
Further, according to one embodiment of present invention, vent 21 is formed as the linear vent 21 extended along the axle center of regulating spool 20 to outer circumferential face, and the length of vent 21 is less than the radius of regulating spool 20.In other words, regulating spool 20 is provided with the linear vent 21 of its upper surface through and lower surface, and this linear vent 21 extends along the radial direction of regulating spool 20, and extended length is less than the radius of regulating spool 20 and is positioned at the side in axle center.
According to one embodiment of present invention, regulate catch 30 fit regulating spool 20 upper surface arrange, when regulate catch 30 fit the upper surface of the regulating spool 20 movable position to regulating spool 20 upper vent hole 21 time, the sectional area of vent 21 on the upper surface of regulating spool 20 can change, thus the ventilation cross section of the vent 21 be communicated with suction port 12 is changed, realize the adjustment to ventilation flow rate.
As shown in Figure 6, catch 30 is regulated substantially to be formed as spirality, regulate the external frame of catch 30 to comprise helix portion 31 and line part 32, helix portion 31 is by first end to the second end to external spiral 360 °, and the two ends of line part 32 are connected with the second end with the first end in helix portion 31 respectively.Now, regulating the cross section of catch 30 to be formed as curvecd surface type, when regulating catch 30 to rotate along its axle center under the drive of valve rod 40, the sectional area of linear vent 21 on the upper surface of regulating spool 20 can be made to change.
Particularly, as shown in Figure 10 to Figure 12, when regulating catch 30 to rotate to position as shown in Figure 10 with valve rod 40, catch 30 is regulated to be covered completely by linear vent 21, ventilation sectional area is made to become 0, and when gas flows into after in chamber 11 from the suction port 12 valve body 10, adjustment catch 30 can press together with regulating spool 20 by gas pressure closely, make there is no space between the upper surface of adjustment catch 30 and regulating spool 20, linear vent hole 21 is completely sealed, be not communicated with between suction port 12 with linear vent hole 21, gas cannot pass through flow control valve 100, flow control valve 100 is in closed condition, flow is zero.
When regulating catch 30 to be rotated in a clockwise direction to position as shown in Figure 11 with valve rod 40, at linear vent 21 place, the periphery of catch 30 is regulated to be greater than the distance on the edge, outermost end distance adjustment spool 20 periphery of linear vent 21 along the distance on edge, distance adjustment spool 20 periphery, regulate catch 30 can not be covered completely by linear vent 21 from the upper surface of regulating spool 20, vent 21 is positioned at and regulates the part outside catch 30 to be in opening-wide state, ventilation sectional area now between linear vent 21 and suction port 12 is the area of this open section, flow control valve 100 is in part opens state, its flow is in a certain numerical value in range of flow.When needing the flow of adjust flux modulating valve 100, only need change the area of this open section, particularly, driving by rotary valve rod 40 and regulating catch 30 to rotate.
When regulating catch 30 to be rotated in a clockwise direction to position as shown in Figure 12 with valve rod 40, on the direction of linear vent 21, regulate the periphery of catch 30 maximum along the distance on edge, distance adjustment spool 20 periphery, catch 30 is regulated to cover the area of regulating spool 20 upper surface along the direction of linear vent 21 minimum, now be positioned at and regulate the sectional area of the linear vent 21 outside catch 30 maximum, namely the open area of linear vent 21 is maximum (regulates the periphery of catch 30 along when arriving the distance on edge, regulating spool 20 periphery when the inner side of linear vent 21 is less than to the distance on edge, regulating spool 20 periphery, whole vent 21 is in complete opening-wide state, ventilation cross section equals the sectional area in linear vent hole 21), ventilation sectional area between linear vent 21 and suction port 12 is maximum, now the flow of flow control valve 100 reaches maximum value.
As can be seen here, be formed as linear vent 21 when vent 21 and regulate the periphery of catch 30 along during for helical curve, only need regulate the catch 30 i.e. flow of controllable flow adjustable valve 100 by rotating, and make its flow realize linearly adjust, control procedure is simple and convenient and adjustment is accurate.Meanwhile, the length of linear vent 21 and width can be adjusted as required to determine the ventilation scope of flow control valve 100, to obtain various traffic demand; And adjustable regulates the shape on the edge, periphery of catch 30 to change the gas flow of different valve rods 40 when different amount.
In order to be more convenient for regulating flow, alternatively, according to one embodiment of present invention, the upper surface of regulating spool 20 is provided with catch positioning spiro pit 22, catch positioning spiro pit 22 be located at vent 21 away from the one end in axle center and regulating spool 20 periphery along between.In this catch positioning spiro pit 22, catch positioning screwn can be installed, to carry out spacing to adjustment catch 30.Wherein, catch positioning screwn can be socket head screw.
Particularly, according to one embodiment of present invention, the length of line part 32 is greater than the beeline between the first end in helix portion 31 and catch positioning spiro pit 22.Now, when regulating catch 30 along its axis rotation, screw in catch positioning spiro pit 22 can play restriction to adjustment catch 30, make the rotating 360 degrees that it can not be complete, when regulating catch 30 to rotate between two limit position, the flow of flow control valve 100 can convert gradually between peak rate of flow and minimum discharge, makes adjustment more accurate.
In addition, consider and regulate the rotation of catch 30 to be driven by valve rod 40, when regulating mobile asynchronous between catch 30 and valve rod 40, the sensitivity of Flow-rate adjustment can be affected, alternatively, according to one embodiment of present invention, regulate the upper surface of catch 30 to be provided with slot 33, the lower end of valve rod 40 is stretched in slot 33 and is regulated catch 30 to rotate to drive.Thus, slot 33 can play positioning action to valve rod 40, valve rod 40 can be assembled together with adjustment catch 30 easily, regulate catch 30 to rotate to drive.
Wherein, the structure of slot 33 can have multiple, such as, as shown in Figure 6, slot 33 is formed as fan-shaped, and one end of valve rod 40 is formed as the fan-shaped bar with its physical fit, when fan-shaped bar is set in slot 33, effectively can prevent valve rod 40 from occurring with the nonsynchronous problem of movement regulating catch 30 to cause because of mutual slippage, make Flow-rate adjustment more accurate.Be understandable that, slot 33 should be positioned at and regulate the shaft core position of catch 30, to make adjustment catch 30 can along its axis rotation under the drive of valve rod 40.
Regulate catch 30 and valve rod 40 to can be metalwork, particularly, regulate catch 30 that metallic copper can be adopted to process, because the self-lubricating property of copper is good, the adjustment catch 30 prepared with it rotates smooth and easy flexibly.Valve rod 40 can adopt duralumin to be prepared from, and now, the intensity of valve rod 40 is high, long service life, and is convenient to processing.
Further, according to one embodiment of present invention, the outer circumferential face of valve rod 40 is provided with the circular groove 41 extended along its circumference, and flow control valve 100 also comprises seal ring 50, and seal ring 50 to be set in circular groove 41 and to abut the inner circle wall of valve body 10.As shown in Figure 8 and Figure 9, when valve rod 40 is assemblied on valve body 10, circular groove 41 on valve rod 40 is positioned at the top of suction port 12, when seal ring 50 is set in circular groove 41, the sealing between the outer circumferential face of valve rod 40 and the inwall of valve body 10 can be improved, avoid the Contact imprecision of the inwall of the outer circumferential face of valve rod 40 and valve body 10 to occur gap and make gas from then on inflow and outflow in gap, thus reducing the accuracy of flow control valve 100 Flow-rate adjustment, affecting its usability.
Similarly, between the periphery wall of regulating spool 20 and the inwall of valve body 10, also seal ring 50 can be set, to improve the sealing of gas circuit between suction port 12 to air outlet 13 in valve body 10, avoid the sidewall contact of the outer circumferential face of regulating spool 20 and valve body 10 not tight and cause gas to flow through from this, affecting the accuracy of Flow-rate adjustment.Particularly, groove can be set on the inwall of valve body 10, then seal ring 50 be placed in it, make the periphery wall close contact of seal ring 50 and regulating spool 20.
Consider that the side of chamber 11 is opened wide, in flow control valve 100 using process, cause valve rod 40 to be deviate from from this chamber 11 opened wide because of internal gas pressure, therefore, when assembling flow control valve 100, side sealing chamber 11 can opened wide, to be fixed in valve body 10 by valve rod 40 and adjustment catch 30, also can improve the sealing of valve body 10 simultaneously.Particularly, adding man-hour, the inwall that chamber 11 can be opened wide side processes screw thread to form tapped hole, and then screwed in this tapped hole by screw plug 60, assembly process is simple and convenient.
And for above structure, the problem of assembling tension may be there is because the reason such as assembling between screw plug 60 and valve rod 40, now valve rod 40 can not rotate neatly, in order to solve this technical problem, alternatively, as shown in Figure 2, can the first limited part 14 be set in valve body 10, first limited part 14 can be avoided screw plug 60 pronation and be close to valve rod 40, makes can be detained between valve rod 40 and screw plug 60 certain gap, ensures the flexibility that valve rod 40 rotates.
Meanwhile, also can placing packing ring 70 in this gap between valve rod 40 and screw plug 60, to alleviate the wearing and tearing that valve rod 40 is subject to when rotating, improving its working life.Particularly, packing ring 70 can adopt polytetrafluoroethylmaterial material to prepare, its slip resistance and self-lubricating property good, namely can reduce valve rod 40 and drive frictional force when regulating catch 30 to-and-fro motion, the working life of packing ring 70 can be ensured simultaneously.
In addition, when regulating spool 20 is when loading in valve body 10, the lower surface of regulating spool 20 and the diapire of valve body 10 can cause vent 21 can not be ventilated by sealing when being close to, and therefore, should reserve certain gap between the upper surface of regulating spool 20 and the diapire of valve body 10.For this reason, the inner circle wall of its lower end surface contiguous on valve body 10 can be arranged to ladder-type, to produce the second limited part 15, as shown in Figure 2, second limited part 15 can limit regulating spool 20 and move to the diapire in valve body 10, make to have certain gap between diapire and regulating spool 20, what ensure between vent 21 and air outlet 13 is unimpeded.
According to the flow control valve 100 of the embodiment of the present invention when assembling, can first seal ring 50 be arranged in the groove of valve body 10 inwall, interior hexagonal Cock screw be arranged on and after in catch positioning spiro pit on regulating spool 20 22, regulating spool 20 be arranged in valve body 10 and offset with the second limited part 15 on valve body 10; Then another seal ring 50 is arranged in the groove on valve rod 40, then catch 30 will be regulated to coordinate with valve rod 40 front end load in valve body 10; Finally packing ring 70 is arranged in valve body 10 by valve rod 40 rear end, then screw plug 60 is screwed in the corresponding tapped hole of valve body 10, so that valve rod 40 and adjustment catch 30 are fixed in valve body 10.Flow control valve 100 can tentatively assemble.
In this assembly process, between each parts, mostly can adopt Spielpassung.In addition, conveniently flow control valve 100 and the connection of miscellaneous part, can be designed to standard threaded aperture by suction port 12 and air outlet 13, to facilitate installation various terminal; Or threaded mounting hole 16 can be set on the outer wall of valve body 10, so that the installation of flow control valve 100.
In a word, according to the flow control valve 100 of the embodiment of the present invention, linearly adjust can be carried out to flow, easy to adjust and accurately, not easily corrosion simultaneously, is convenient to processing and assembling, can cuts down finished cost, save installation time.
The respiratory machine of embodiment according to a second aspect of the present invention, comprises the flow control valve 100 of above-described embodiment.Owing to having above-mentioned useful technique effect according to the flow control valve 100 of the embodiment of the present invention, therefore also have corresponding technique effect according to the respiratory machine of the embodiment of the present invention, namely Flow-rate adjustment is simple and accurate.
According to other formations and the operation of the respiratory machine of the embodiment of the present invention, be all known for the person of ordinary skill of the art, be not described in detail at this.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. a flow control valve, is characterized in that, comprising:
Valve body, be limited with the chamber that side is opened wide in described valve body, described valve body is provided with and the suction port of described chamber conducting and air outlet;
Regulating spool, described regulating spool is located in described chamber and between described suction port and air outlet, described regulating spool is provided with the vent with described suction port and the conducting of described air outlet;
Regulate catch, described adjustment catch fits the setting of described regulating spool movably with the sectional area regulating described vent and described suction port and air outlet conducting; With
Valve rod, described valve rod is located at the unlimited side of described chamber and closes described chamber, and described valve rod is connected with described adjustment catch to drive described adjustment catch movable.
2. flow control valve according to claim 1, is characterized in that, described chamber is formed as the tubbiness of open upper end, and described suction port is located at the side of contiguous lower end on described valve body, and described air outlet is located at the lower end of described valve body.
3. flow control valve according to claim 2, is characterized in that, described regulating spool is formed as column, and described vent is formed as the through upper surface of described regulating spool and the through hole of lower surface.
4. flow control valve according to claim 3, is characterized in that, described vent is formed as the linear vent extended along the axle center of described regulating spool to outer circumferential face, and the length of described vent is less than the radius of described regulating spool.
5. flow control valve according to claim 4, is characterized in that, described adjustment catch fit described regulating spool upper surface arrange, described adjustment catch is formed as spirality, and the external frame of described adjustment catch comprises:
Helix portion, described helix portion by first end to the second end to external spiral 360 °; With
Line part, the two ends of described line part are connected with the second end with the first end in described helix portion respectively.
6. flow control valve according to claim 5, is characterized in that, the upper surface of described regulating spool is provided with catch positioning spiro pit, described catch positioning spiro pit be located at described vent away from the one end in axle center and described regulating spool periphery along between.
7. flow control valve according to claim 6, is characterized in that, the length of described line part is greater than the beeline between the first end in described helix portion and described catch positioning spiro pit.
8. flow control valve according to claim 5, is characterized in that, the upper surface of described adjustment catch is provided with slot, and the lower end of described valve rod is stretched in described slot to drive described adjustment catch to rotate.
9. flow control valve according to claim 8, it is characterized in that, the outer circumferential face of described valve rod is provided with the circular groove extended along its circumference, and described flow control valve also comprises seal ring, and described seal ring to be set in described circular groove and to abut the inner circle wall of described valve body.
10. a respiratory machine, is characterized in that, comprises the flow control valve according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072351.3A CN104879515A (en) | 2014-02-28 | 2014-02-28 | Flow control valve and respirator provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072351.3A CN104879515A (en) | 2014-02-28 | 2014-02-28 | Flow control valve and respirator provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104879515A true CN104879515A (en) | 2015-09-02 |
Family
ID=53947125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410072351.3A Pending CN104879515A (en) | 2014-02-28 | 2014-02-28 | Flow control valve and respirator provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104879515A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681679A (en) * | 2019-02-26 | 2019-04-26 | 昆山远山天地软件技术有限公司 | Fluid one-way conduction structure, non-return component and breathing apparatus |
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| CN1331393A (en) * | 2000-06-26 | 2002-01-16 | 太平洋工业株式会社 | Electric flow control valve |
| CN203757031U (en) * | 2014-02-28 | 2014-08-06 | 北京谊安医疗***股份有限公司 | Flow regulating valve and breathing machine with flow regulating valve |
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|---|---|---|---|---|
| US4380250A (en) * | 1980-03-28 | 1983-04-19 | Kurt Stoll | Choke unit |
| JPS6123743Y2 (en) * | 1981-09-05 | 1986-07-16 | ||
| JPS6238061Y2 (en) * | 1981-09-24 | 1987-09-29 | ||
| CN1331393A (en) * | 2000-06-26 | 2002-01-16 | 太平洋工业株式会社 | Electric flow control valve |
| CN203757031U (en) * | 2014-02-28 | 2014-08-06 | 北京谊安医疗***股份有限公司 | Flow regulating valve and breathing machine with flow regulating valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681679A (en) * | 2019-02-26 | 2019-04-26 | 昆山远山天地软件技术有限公司 | Fluid one-way conduction structure, non-return component and breathing apparatus |
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Application publication date: 20150902 |